Algebraic totalizer.



A. F. POOLE.

v ALG'EBRAIC ToTALlZER.

A. F. POULE. ALGEBHAIC TOTALIZER. v APPLICATION FILED IAN. I6. IaI`4. IIENEwED MAR. 22, 1916.

Patented Oct. 24, 1916.

2 SHEETS-SHEET 2.

'Y Leonesa.,

Application filed January 16, 1914, Serial No. 812,546.

' @ne of the objects ,man sans A" ERICE.

ARTHUR F. POOLE, 0F CHICAGO, ILLINOIS, ASSIGNOB TO WAHL ADDING vMACHINE CO., 0F WILMINGTON, DELAWARE, A CORPORATION 0F DELAWARE.

i mannaro Tornnrzua.

To all 'who/m, t may concern.'

Be it known that l, ARTHUR FI citizen of the United States, residin Chicago, of illinois, have invented certain new` and useful limprovements in Algebraic Totalizers, of which' the following is a specification. 4

My invention is an improvement in algebraic totalizers for use in connection with A calculating inachirieaand is .in the nature of an improvement or addition to the algebraic totalizer described in my copending application for calculating machines, Serial Number 751,032, filed February 27th, 1913.

POOLE: a? at i provisionnf analgebraic totalizer with but mechanism to a. singlelfaet of carrying mechanism from which totalizer the accurate totalsof a series of items, whether said-items or totalsv be positive Another object of my invention is, the provision of anfalgebraic totalizer requiring a manual operation when the totalizer passes through zero, and having means for automatically screening the exhibited total in case said total be not the correct total to be read from the machine. t

of my invention is the4 or negative or both, may befreadL Specication of Letters Patent.

in the county of Cook and tata;4m

ln my application above referred to,` l

have shown an algebraic totalizer havin two sets of number wheels paired 9-0, and a shutter device forindicating which set of numerals shall be read, lt is well known in the theory of these totalizers that when the totalizer passes through zero, there is required the addition of a unit in the lowest place in order to correct the total. in my cited application, l have so connected the shutter device that coincident with the shifting ofthe shutters to designate either the total, one unit is added into the lowest place of the totalizer thereby correcting the ex- Y hibited total,Y

positive or the negative A positive number wheels.

negative total may some-'1 .to be read. In

Voperator noticing lneously insertin vmanually operated shutter.

.ual shutter into Renewed March 22, 1916. Serial No. 85.987.

times result in an errorv of the operators failing tonoti'ce the figure in the highest decimal place and copyin not butthe complement thereo It is one of the objects of my present invention to provide automatic means for concealing a wrong total, thereby making the totalizer such that it will exhibit the correct total, or this end, l have, in addition to the manually operated shutters ,shown` in my cited co- Patented Oct. 24,', 1916,

the teal, I

exhibit n total at all. ToV

pending application, provided a pair of auxiliary shutters which are 'connected to and move with the highest number wheel. These auxiliary shutters coperate with the manual ones in the following way: Assume a positive total in the totalizer of my cited application. The manual shutters are then.A

in a position to exhibit the positive number wheels and conceal the negative ones.-

Now assume a number greater than the exhibited positive total totalizer. The highest wheel ofthe set of exhibited a 9, thus indicating that a negative total is the operation of the totalmy cited application, the

that a 9 had hibited operates a handle vthereby shifting the shutters to conceal the positive number wheels and exhibit the negative simultaf a unit in the lowest decimal place .of t e 'totalizelxv The correct total is then read from the negative number wheels. y y

ln my present invention, the fact of the izer described in number wheels in the highest decimal place of the positive set changing from 0 to' .9 will lthrow an auxiliary shutter over the The totalizer then exhibits no number at all, since the wheels are closed by the auxiliary shutter, and the negativewheels are erator should wish to read the negative total, it is necessary for her to lirst manipulate the handle. |ihis will throw themanpositive and' exhib't the negative number wheels. v

It is true that the u'ositivenhmber wheels are now concealed y two shutters, the auxiliary shutter-.before mentioned, and the manually operated one. However, that is immaterial to the concealing of the number be subtracted fromfthe positive numbersv will now show closed by the In case the opbeen. ex-

positive a position to conceal the on the positive wheels, since the number is just as invisible when covered b two shutters as when covered by but one. he highest number wheel of the set adapted to exhibit negative totals is. also provided with an auxiliary shutter which operates in the sa'me manner as the shutter for the positive set 'just described.

Summing up, assuming that the totalizer exhibits a positive total, the subtraction of a greater numberv will cause the totalizer to exhibit no number at all until the handle is thrown to exhibit a negative total. The total then exhibited will be the correct one, and will be the only number visible on the totalizer. Should a positive number greater than the exhibited negative total be afterward added, the negative total will become invisible, and in case this new total is to be read the handle must again be shifted so as to display -the positive total. 1t will be seen that I have in this-improved algebraic totalizer a condition in which the totalizer will either exhibit the correct total or will exhibit no number at all.

Having now described the theory of my invention 1 will go into the details ot the construction and operation of a particular application of it. his may be best understood by reference to the accompanying drawings of which- Figure 1' is a side view of the totalizer on its supporting truck. Fig. 2 is a front view of the totallzer with the cover removed. Fig. 3 isa vertical section on line 3-3 of Fig. 2. Fig. 4 isa perspective ot the shutter and units adding mechanism. Some of the number wheels have been omitted in this last view forthesake of clearness.

The particular embodiment-of my invention which 1 have herein described is designed to be used in connection with the Wahl calculating machine, which has been fully described in Patent 893,718 issued to John C. Wahl, July 21st, 1908. Referencethereto will show a totalizer mounted on a typewriter carriage, a setof numeral keys, any of which serves to operate a master wheel 49 -and a master dog 208; also that the depressing of any numeral key results in the master wheel 49 and the dog 208 moving in the following sequence: (a) Dog. 208 moves in a counter clockwise direction (Fig. 1), thus unlocking the chain of the totalizer gears at the actuated gear.; (b) The master wheel rotates an amount depending on the key actuated. A(c) The dog returnsto its original position. (d) The carriage escapes, bringing the totalizer wheel of Ithe next lower order into engagement with the master wheel. A. reversing handle is also provided whereby the direction of vmotion of the master wheel consequent upon the actu. ating ofuany key will "l-be etermined and thus numbers inserted in the machine either xthe right and left,

additively or subtractively. Since the mech- I 'anism for producing these motions is very thoroughly described in the patent referred to, I shall not now enter into a further` description of such mechanism, but shall premise that the actuating of a typewriter numeral key results in the master wheel, masterdog and carriage moving in the sequence recited above. and the master dog 208 in my present application correspond in position and function to the master wheel and master dog bearing the same numbers in the cited patent to Wahl referred to above.

Suitably supported by its side plates 10 and 11 is a totalizer constructed similarly to the totalizer of patent. This consists of a set of carrying gears 12 (Figs. 1 and 2) loosely mounted on a shaft 13 rigid between the plates 10 and 11 and which are adapted to coperate sem'atz'm with the master wheel 49 rotatably mounted in the framework, and a set of transfer gears .14 pivoted at 15 on a set of swinging arms 16. These arms, are loosely mounted on the shafts 17 and 18, and their associated transfer gears 14 serve to connect the carrying wheels 12. Arms 16 have heels 19 adapted to be engaged seratim by the master dog 208. The carrying gears 12 are provided with the usual carrying teeth which cooperate with\ the transfer gears 14 and -thus transfer the tens at the proper time. The chain of i, gearing composed of the carrying ears 12 and the transfer gears 14 is norma ly locked. 1n order for the The master wheel numbered 49- the above mentioned Wahl ioo master wheel to operate on a carrying wheel at the middle ot the chain the master dog 208 acts on a swinging arm 16, thereby raising the transfer gear" 14 mounted thereon out of mesh with the carrying gears 12 to thus unlocking the actuated carrying gear 12 from the next one to the right. 1

The totalizer is mounted on a truck 20 moving with the typewriter carriage. Numbers are inserted in the totalizer by the master wheel one digit at a time, beginning with the di 't in the highest place and ending with t e digit in the units place. During the insertion of a number the typewriter carriage escapes step by step to the left after the insertion of each digit,l thus bringing successive carrying gears 12 into mesh with 'the carrying gear 49 and successive swinging arms 16 in a position to be acted on by the master dog 208.

The foregoing-will be recognized as substantially the operation and structure of the A11 is a shaft 28 on supported on sha 2l and'22 rigid between 26 are the positive ligure bearing disks 23 Y ber wheels.

and the negative figure bearing disks 24.

These have the igures from 0 to 9 inclusive on their periphery. There is a disk 23 and a disk 24 connected by means of an idler 26 to each carrying gear 12, and the gear connections are such that thedisks 23 and 24val vways revolve in the same direction. The figures on these disks are arranged to progress in opposite directions and the totalizer is so assembled that when a 9 is on the reading line forn the disk 23 a 0 is on the reading line for the disk- 24 and vice versa. i

A suitable cover 29 for the totalizer is provided and this cover has two windows 30 and 31 through which the numbers exhibited by the disks 23'and 24 may 'be' read. However, since but one of these numbers is desired to be read at any particular time a shuttermechanism 1s provided for the Nsuperiuous number. is mechanism will now be described. Rotatably mounted on the shafts 21 and are segmental gears 32 and 33. These serve as supports for the shutters 34 and 35, which extend over all the number disks on the respective shafts 21 and 22 and the shut ters are riveted to the segmental gears 32 and 33. The shutters 34 and 35 are of suitable width to register with the openings'30and 31, and when either shutter is behind its correspondin opening the numbers on "the, number W eels associated with that opening are, of course, concealed. The two se ental gears 32 and 33 are in mesh with an i le ear 36 rotatably mounted on the shaftv 28.

idle gear in its turn is in mesh with a mental gear 37 (best-shown in Fi tatably mounted on the shaft 13.

readily seen thatv rotation of the se ental gear 37 will be -transmittedthrough t 'e idler 36 to the shutters and enable one or the other of the lines of figures to be viewed through the wixidows 30er 31- according to the position of-theshutters. e segmental gear 37 is held in its position rotatably mounted on the shaft 18 and in engagement with it by a spring 40.

Re errin Seg' 3), ro-

eld

g now to Fig. 4, it will be seenthat to the left of the highest number wheels of the totalizer are two auxiliary disks 55 and 56. 55 is on a shaft 21 carrying the positive number` wheels and 56 is on theshat 35 on which are mounted the negative num- These auxiliary disks 55 and 56 are connected bya transfer gear 14 to the highest number wheel of the totalizer, and are soarranged that when the highest number wheel in the positive set, for instance,

the side plates. Rigid with the gears 25 and hisI by a do 38V ychanges from O to 9, the disk 55 will be moved so as to change the shutter '57 from the position shown in Fig. 4 into a position in line With the openin 30 of the cover 29. The disk 56 associate with the negative number wheels is similarV y'constructed, and is so assembled that when theshutter 57 for the positive number wheels moves to be in line'with the window 30 that a similar shutter 58 rigid with the disk 56 associated with the negative number wheelsis out of line with the opening 31. The purpose of this movement ofthe shutters has been thoroughly gone into in the ybeginning of this specification and need not be reviewed here. Loosely mounted on the shaft 13 is a oam'41 which is rigidly connected to a handle 42 by studs 43 and 44, which extend through suitable slots 45 and 46 in the side plate 10. Rigid with the segmental gear37 are-two studs 47 and 48, these being of sufficient length' to engage the cam 41 when 1the latter kis rotated. It will now be seen that move-- ment of the handle 42 will be transmitted to the cam 41 and such motion by means of the engagementof the cam 41 with the stud 47, or instance, will serve to rotate the segrotation of the latter. Y It is well lmown that when a totalizer having a single set of reversible carr ing mechanism is provided with two sets o ligures from which both positive and negative totals may be read, the positive totals being 'read from one set of figures and the ne ative totals from the other, and further, t at when these figures are paired in the relation et cetera, an extraunit must be added tothe set of figures to be read time` thetotalizer passes through zero in elther direction. For instance, assuming that'avpositive total is exhibited by the -totalizer and that a greater number than the total exhibited is subtracted, the set of wheels which had been exhibiting lthe positive total would now change to show a number preceded oy 9s in the highest decimal places, which number would be the correct arithmetical complement of the negative total, and a number would be exhibited on the set ofligures from which the negative total is read, .but the latter number, owing to the wheels 9 0, would be one unit amount. I have, therefore, provided mecha-- nism operating coincidentally with the gear 37, consequently changing thev being paired in the relation ofless .than the correct' callyv add ber lexposed the segment gear` ion 52 rotatably mou y the swinging arm 16 the totalizer. T

width to enga e units place o 'ever shutter shi be rotated on I will be put in The parts are s tals are read on a window 30 and neg the disk 24 th v numbers on the di ter clockwise directie 24 progress in suming the par in Fig'. 3, the being eX-po d downward, shutters 34 an 25 direction, 'eXposin disks 24 and concea disks 23 and al motion transmitted by the p carrying w so number turned in a This will a negative number d k will be simultaneo 35. number indicated disks 23 butf since a time concealed by 34 this will Attention is ca 40 time ofl -the inser units place, s ltotal in the totalizer through ze `mental gear 'T37 for allthe carrying ge Consequently it i of the numb nit is inserted,

bev done it ing -lditional u ing throughout' also directed which connects the segm carr` ing gear 12i tota izer is one inthe units p aid shifting. 37 also mesh the totalizer;

dle 42 is move fted thereby, the

the number the ,window 31.

it will be readily s een consequence o s these disks v chain. Att act that the pinion 52 ever, l consider such a construction is an d on. a swi fthe `one Awhich "is 55 withthe dog is in engagement 'w `in the units' pl sequently at out ofv mesh', t

`.'60 gear12in; the unit free Ato be moved Reference t'ol patent to Wahl ing with a locking f the totalizen the pinion leaving th he totalizer will move `out of the line 'of sight, thereby er wheel 49. exposing the total again. In case, however, 4 of the cited the operator should `wish to'fread a' total f the carryfrom the machne when said total iscontherei'nis provided cealed by oneor the' other of the auxiliary f having a passing shutters -57 and 58, the movement ofthe Figs. 3 and recense lace of the ,numhollow 125. This is the well-known con- -'lo this end struction of the Geneva carrying mechaes with a pinnism, the locking disk serving to hold the' stud 53 in transfer gear lockedlexcept at the carrying units place of point when the passing hollow 125 of the suflicient locking disk allows the star teeth 133 of the l12 in the transferwheel to turn without interference.v consequently Similarly in the units inserting device `o my d. and the herein described totalizer, the segmenta 52 will gear 37 is provided with a locking disk. ditional unit rlhis disk is provided with a passinghollow the units place of the totalizer. and the parts are so assembled that this o arranged.

topassinghollow will permit the-turning o disks 23 through the pinion 52 when the segmental gear 37 ative totals are read on is turned by `the handle 42 to thereby rThe -insert or withdraw an extra unit in the to- 23 progress in a countalizer.. n and those on ckwise direction. the position the disks As far as the segmental gear 37 of my Aspresent .application is concerned, the lockshown ing disk thereto attached has no 'tunction number wheels 23 except that of a spacing washer since this handle 42 moved i gear 37 is turned but one step in either dibe segmental gear 37 with a locking disk also kwise direction also. than it is to omit such a disk.

the units place of the While I have lshown my invention em- 24. @t course one ploying twol sets of number wheels it is subtracted from the obvious that Vthis is not at all necessary ositive numeral since one set of number wheels could be are at that provided having two oppositely running sets the cooperating shutter of figures paired 50,9, and a' single shutter could be used to shift lfrom one set o e fact that at the figures to the other. .The particular `reason of the units in ntto a pas the why two sets of numberl wheels were used sage of the yin, this present constructioninstead of onev ro, the segwas trom considerations of space only, since chain with in the Wahl machine the distance of vone the totalizerL- Ycarrying gear 12 'to the next is one-tenth `of terial what the readan inch, thereby conforming tothe ordinary sis when this ad' typewriter pitch, and there would not be for it any carryspace enough to employ a number wheel ll be transmitted with two sets of figures on it without inakention .is ing those gures undesirably'small. Howy 115 ental gear 37 to the obvious equivalent of my invention. the runits `place of the It is to be noted that whenever the total nging,A arm 16. passes through zero, the number exposed 'nengagement when the master wheel 49 the shutter 57 or the shutter 58 accordingith the carrying' gear 12 as number is positive or negative. In Concase' 'they .operator again passes through zero l'fted `before shewishes to read a total, the auxile vcarrying iary shutter1 57 vor 58, as the case may ,-be,

the totalizer will be concealed by either that both rection and this step always communicates rotate in a clockwise motion to the pinion'52. It may be aske e negative number why then should the segmental gear 37 be the'positi've number provided with a locking disk at all. The an the swer is. that a locking disk is necessary for on 52 to the all the carrying wheels 12, and for manu- 'n the units place; both acturing reasons, it is easier to provide the handle 42 will -expose the correct total to vthan compensated for by its simplicity as be read. Conse uently but one rule is necescompared to the automatic unit inserting sary for operating this totalizer: Read the mechanism. total exhibited or in case no total is shown, Attention is Vdirected t my cited co shift the handle 42, and read the `then pending application Serial Number 751,032 7g exhibited total. filed February 27th, 1913, in which I have In my cited application Serial Number claimed matters of invention herein dis- 751,032, filed February 27th, 1913, I have closed but not claimed and I do not wish showntthe shutters corresponding to shutto claim herein any matters of invention ters 34 and 35 of this application, having disclosed in said cited application. 15

suitable legends inscribed on them directing `Many changes and modifications 'may' be the operator how to manipulate the machine made in the precise structure herein shown teclear the totalizer; thus one shutter bears and described Without departing from the the legend Positive total. Erase by subspirit of my invention, since 16 traction. and the other shutter bears the l I claim:

. legend Negative total. `Erase by addition. 1. In a calculating machine the combina- Similarly, the auxiliary shutters 57 and 58, tion of: a totalizer adapted to exhibit two peculiar to my present invention, which are numbers; a manually operated shutter coexposed to the view of the operatorl only in v operating with each of the numbers; and an 20 caseit is necessary to manipulate the handle automatically operated shutter coperating 85 42, may be inscribed With the legend Shift with each of said numbers. l handle.- I have not shown' any of .these 2. In a calculating machine the combinalegends on the drawings since their presence tion of: a totalizer adapted to exhibit two would simply tend 'to confuse the pictures numbers; means to conceal one or theother of the shutters themselves. However, the of said numbers coincident with the passage 90 ions which I have given in this speci- Vof said totalizer Athrough zero, and manually cation regarding these legends will be operated means to tconceal one or the other cient to enable'one skilled in the art to of said numbers.

paint them upon the shutters in their roper 3. In a calculating machine the combina- 4 laces. It'is to be noted that the egend tion of: a set of carrying gears; aset of 95 i ositive total. Erase by subtraction. is totransfer gears; means for exhibiting a total; be placed on the Vshutter numbered 35, theA a shutter device moving coincidentally with legend Negative total. Erase by addition. the highest .carrying gearof said set and is to be p aced` on` the shutter 34, and thev vadapted to conceal said exhibit total; and a legend Shift handle. is to be placed onv both manually operated shutter device also adapt- 100 I the shutters 57V and 58. ed to conceal said total.

It is be n oted that the Wahl machine 4. In a calculating machine the combinawith which this totalizer is assumed to be tion of: a set of number wheels adapted to used is provided with a lever determining exhibit a positive total; a second set of numthe direction of rotation of the master wheel .ber wheels adapted to exhibit a' negative 105 consequent upon the depression of any total; ashutter device coperating with said 1 numeral key. By this means, numbers ma number wheels.; and mechanism to move the Inserted into a totalizer either in addisaid shutter device coincident with the pastion o r subtra'ctlon. sage 'of either of said sets of number wheels YVhile I have described my lnventionv as through zero; andamanually operated shut- 11 g used in a totalizer suitable for use vter device also coperating with said number with the Wahl machine, it is obvious that wheels. theinvention is useful with any kind ofa 5. In a calculating machine the combinattlzel' l l Whhit iS desirable t0 cbm Ute tion of: a' totalizer adapted to exhibit either 5 promiscue I positive and negative nm rs. of two numbers; a designating device shift- 115 1 to the simplicity of able to designate either number; manual this While there have b een algebraic` means to shift said designating device and in the art in which the .simultaneously add a predetermined amount shifting o the shutters and the coincident to the new number designated; and an autoadding of 1 inthe units place of the totalvmatic concealing device operated coincident' 12 izer has beendene automatically as deterwith the passage of the totalizer'through mined ge yof the highest WheelV zero. through zero, -yet any mechanism withwhieh 6. In a calculating machine the combina- I am acquainted having thie function is tion of: a totahzer adapted to exhibit either 9 rather complicated. Considering that the of two numbers; a master mechanism adapt- 125 number of times a total is read is small ed to insert numbers in said totalizer digit compared lthe number of times an item by digit` in either direction; a designating,

-'1sf mserted. .-lmto' a f totalizer, I am of vthe device shiftable to designate'either number;

opmien that what the device herein shown Vmanual means operating independently of lacks 1n the way of being automatic is more said master mechanism to shift Said desig- 13 a digit nating device and simultaneously add a preregistered; shittable means to designate cerv tain digits on said digit bearing members;

v total.

manual means operative on said digit adding means and said digit designating means whereby a digit may be added to said digit bearingmembers and the digit designating means simultaneously shifted at will; and a shutter device operated by said digit bearing members.

8. In a calculating machine the combina-y .tion of: a totalizer adapted to exhibit two numbers;| a manually operated designating device coperatmg with each of the numbers;J and an automatically operated shutter coperating with eachof said numbers.

9. In a calculating machine the combination of: a totalizer, including means to exhibit a tot-al; lmeans to lconceal 'said total when said total is incorrect; and manual means to add an amount to'said total and coincidentally exhibit said total.

10. In a calculating machine the combination of: a totalizper including means to exhibit a total; automatic means operating to conceal said total when said total is incor- `rect; 4and manual means to add an amount .to said total and/ coincidentally exhibit said 11. In a calculating machine the combination of: a totalizer including means to exhibit a total; actuating mechanism adapted to yinsert numbers therein; means to conceal said total when said total passes through zero as a result of a number inserted by said actuating mechanism; and manual means to add an amount to said total and coincidentally exhibit said totali negative totals,

coincidentally mechanism "place of said totalizer,

l2. In a calculating machine, the combination of a totalizer including exhibiting means to exhibit a total, 'means to prevent the exhibition of said total when said total is incorrect, and means to add a unit to said total and coincidentally exhibit it."

` 13. In a calculating machine, the combination of a totalizer adapted to exhibit either a positive or a negative total, a manually operated '"sliiitter cooperating with the exhibited totall'and an automatically operated shutter cooperating with the exhibited total. la. In a calculating machine, the combination of a totalizer having a set of numeral wheels and adapted to exhibit pdsitive and a manually operated shutter cooperating; with said exhibited total, and a second shutter controlledby the highest wheel of said totalizer cooperating with said exhibited total. j

l5.. In a calculating machine, the combination of a set of carrying gears, transfer. mechanism connecting said gears, means for exhibiting a total, a shutter device moving the highest carrying ear of said set and adapted to conceal said exhibited total, and a manually operated shutter device also adapted to conceal sai total? 16. Ina calculating machine, the combination of a set of carrying mechanism connecting said gears, means for exhibiting a total, shutter' device moving co-incidentally with the highest carrying gefar of said set and adapted to conceal said exhibited total, a manually operated shutter device also adapted tov conceal said total, to insert a unit in the lowest andl an operating means common to both said manual shutter and said unit inserting device. In witness whereof, I have hereunto subscribed my name in the presence of two witnBSes.

u v ARTHUR F. POOLE. I`"Witnesses: l

R.- GEO. C. BOA, donn4 C. WAHL.

gears, transfer c 

